ci: Update github actions

Author: joel16

.github/workflows/c-cpp.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     container: pspdev/pspdev:latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name: Install dependencies
       run: |
@@ -20,7 +20,7 @@ jobs:
     - name: Compile project
       run: make
 
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
         name: CMFileManager-PSP
         path: app/EBOOT.PBP